cmd: fpga: Move fpga_loadbitstream to fpga.c

In bitstream decoding you can directly check device
which you want to load and in fpga.c are fpga_validate
and fpga_dev_info functions which should be used for it.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Tom Rini <trini@ti.com>

common/cmd_fpga.c

@@ -44,100 +44,6 @@ static int fpga_get_op(char *opstr);
 #define FPGA_DUMP   3
 #define FPGA_LOADMK 4
 
-/* Convert bitstream data and load into the fpga */
-int fpga_loadbitstream(unsigned long dev, char *fpgadata, size_t size)
-{
-#if defined(CONFIG_FPGA_XILINX)
-	unsigned int length;
-	unsigned int swapsize;
-	char buffer[80];
-	unsigned char *dataptr;
-	unsigned int i;
-	int rc;
-
-	dataptr = (unsigned char *)fpgadata;
-
-	/* skip the first bytes of the bitsteam, their meaning is unknown */
-	length = (*dataptr << 8) + *(dataptr + 1);
-	dataptr += 2;
-	dataptr += length;
-
-	/* get design name (identifier, length, string) */
-	length = (*dataptr << 8) + *(dataptr + 1);
-	dataptr += 2;
-	if (*dataptr++ != 0x61) {
-		debug("%s: Design name id not recognized in bitstream\n",
-		      __func__);
-		return FPGA_FAIL;
-	}
-
-	length = (*dataptr << 8) + *(dataptr + 1);
-	dataptr += 2;
-	for (i = 0; i < length; i++)
-		buffer[i] = *dataptr++;
-
-	printf("  design filename = \"%s\"\n", buffer);
-
-	/* get part number (identifier, length, string) */
-	if (*dataptr++ != 0x62) {
-		printf("%s: Part number id not recognized in bitstream\n",
-		       __func__);
-		return FPGA_FAIL;
-	}
-
-	length = (*dataptr << 8) + *(dataptr + 1);
-	dataptr += 2;
-	for (i = 0; i < length; i++)
-		buffer[i] = *dataptr++;
-	printf("  part number = \"%s\"\n", buffer);
-
-	/* get date (identifier, length, string) */
-	if (*dataptr++ != 0x63) {
-		printf("%s: Date identifier not recognized in bitstream\n",
-		       __func__);
-		return FPGA_FAIL;
-	}
-
-	length = (*dataptr << 8) + *(dataptr+1);
-	dataptr += 2;
-	for (i = 0; i < length; i++)
-		buffer[i] = *dataptr++;
-	printf("  date = \"%s\"\n", buffer);
-
-	/* get time (identifier, length, string) */
-	if (*dataptr++ != 0x64) {
-		printf("%s: Time identifier not recognized in bitstream\n",
-		       __func__);
-		return FPGA_FAIL;
-	}
-
-	length = (*dataptr << 8) + *(dataptr+1);
-	dataptr += 2;
-	for (i = 0; i < length; i++)
-		buffer[i] = *dataptr++;
-	printf("  time = \"%s\"\n", buffer);
-
-	/* get fpga data length (identifier, length) */
-	if (*dataptr++ != 0x65) {
-		printf("%s: Data length id not recognized in bitstream\n",
-		       __func__);
-		return FPGA_FAIL;
-	}
-	swapsize = ((unsigned int) *dataptr << 24) +
-		   ((unsigned int) *(dataptr + 1) << 16) +
-		   ((unsigned int) *(dataptr + 2) << 8) +
-		   ((unsigned int) *(dataptr + 3));
-	dataptr += 4;
-	printf("  bytes in bitstream = %d\n", swapsize);
-
-	rc = fpga_load(dev, dataptr, swapsize);
-	return rc;
-#else
-	printf("Bitstream support only for Xilinx devices\n");
-	return FPGA_FAIL;
-#endif
-}
-
 /* ------------------------------------------------------------------------- */
 /* command form:
  *   fpga <op> <device number> <data addr> <datasize>

drivers/fpga/fpga.c

@@ -187,6 +187,15 @@ int fpga_add(fpga_type devtype, void *desc)
 	return devnum;
 }
 
+/*
+ * Convert bitstream data and load into the fpga
+ */
+int __weak fpga_loadbitstream(unsigned long dev, char *fpgadata, size_t size)
+{
+	printf("Bitstream support not implemented for this FPGA device\n");
+	return FPGA_FAIL;
+}
+
 /*
  * Generic multiplexing code
  */

drivers/fpga/xilinx.c

@@ -48,6 +48,92 @@ static int xilinx_validate (Xilinx_desc * desc, char *fn);
 
 /* ------------------------------------------------------------------------- */
 
+int fpga_loadbitstream(unsigned long dev, char *fpgadata, size_t size)
+{
+	unsigned int length;
+	unsigned int swapsize;
+	char buffer[80];
+	unsigned char *dataptr;
+	unsigned int i;
+
+	dataptr = (unsigned char *)fpgadata;
+
+	/* skip the first bytes of the bitsteam, their meaning is unknown */
+	length = (*dataptr << 8) + *(dataptr + 1);
+	dataptr += 2;
+	dataptr += length;
+
+	/* get design name (identifier, length, string) */
+	length = (*dataptr << 8) + *(dataptr + 1);
+	dataptr += 2;
+	if (*dataptr++ != 0x61) {
+		debug("%s: Design name id not recognized in bitstream\n",
+		      __func__);
+		return FPGA_FAIL;
+	}
+
+	length = (*dataptr << 8) + *(dataptr + 1);
+	dataptr += 2;
+	for (i = 0; i < length; i++)
+		buffer[i] = *dataptr++;
+
+	printf("  design filename = \"%s\"\n", buffer);
+
+	/* get part number (identifier, length, string) */
+	if (*dataptr++ != 0x62) {
+		printf("%s: Part number id not recognized in bitstream\n",
+		       __func__);
+		return FPGA_FAIL;
+	}
+
+	length = (*dataptr << 8) + *(dataptr + 1);
+	dataptr += 2;
+	for (i = 0; i < length; i++)
+		buffer[i] = *dataptr++;
+	printf("  part number = \"%s\"\n", buffer);
+
+	/* get date (identifier, length, string) */
+	if (*dataptr++ != 0x63) {
+		printf("%s: Date identifier not recognized in bitstream\n",
+		       __func__);
+		return FPGA_FAIL;
+	}
+
+	length = (*dataptr << 8) + *(dataptr+1);
+	dataptr += 2;
+	for (i = 0; i < length; i++)
+		buffer[i] = *dataptr++;
+	printf("  date = \"%s\"\n", buffer);
+
+	/* get time (identifier, length, string) */
+	if (*dataptr++ != 0x64) {
+		printf("%s: Time identifier not recognized in bitstream\n",
+		       __func__);
+		return FPGA_FAIL;
+	}
+
+	length = (*dataptr << 8) + *(dataptr+1);
+	dataptr += 2;
+	for (i = 0; i < length; i++)
+		buffer[i] = *dataptr++;
+	printf("  time = \"%s\"\n", buffer);
+
+	/* get fpga data length (identifier, length) */
+	if (*dataptr++ != 0x65) {
+		printf("%s: Data length id not recognized in bitstream\n",
+		       __func__);
+		return FPGA_FAIL;
+	}
+	swapsize = ((unsigned int) *dataptr << 24) +
+		   ((unsigned int) *(dataptr + 1) << 16) +
+		   ((unsigned int) *(dataptr + 2) << 8) +
+		   ((unsigned int) *(dataptr + 3));
+	dataptr += 4;
+	printf("  bytes in bitstream = %d\n", swapsize);
+
+	return fpga_load(dev, dataptr, swapsize);
+}
+
 int xilinx_load(Xilinx_desc *desc, const void *buf, size_t bsize)
 {
 	int ret_val = FPGA_FAIL;	/* assume a failure */

include/fpga.h

@@ -68,6 +68,7 @@ extern void fpga_init(void);
 extern int fpga_add(fpga_type devtype, void *desc);
 extern int fpga_count(void);
 extern int fpga_load(int devnum, const void *buf, size_t bsize);
+extern int fpga_loadbitstream(unsigned long dev, char *fpgadata, size_t size);
 extern int fpga_dump(int devnum, const void *buf, size_t bsize);
 extern int fpga_info(int devnum);